From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6802C433EF for ; Mon, 11 Jul 2022 16:43:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230348AbiGKQns (ORCPT ); Mon, 11 Jul 2022 12:43:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229629AbiGKQnq (ORCPT ); Mon, 11 Jul 2022 12:43:46 -0400 Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 81E811EC48 for ; Mon, 11 Jul 2022 09:43:44 -0700 (PDT) Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 26BGdZSI007170; Mon, 11 Jul 2022 11:39:35 -0500 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 26BGdYRl007169; Mon, 11 Jul 2022 11:39:34 -0500 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Mon, 11 Jul 2022 11:39:34 -0500 From: Segher Boessenkool To: Christophe Leroy Cc: Michael Ellerman , Nicholas Piggin , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/5] powerpc/32: Do not allow selection of e5500 or e6500 CPUs on PPC32 Message-ID: <20220711163934.GE25951@gate.crashing.org> References: <8abab4888da69ff78b73a56f64d9678a7bf684e9.1657549153.git.christophe.leroy@csgroup.eu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8abab4888da69ff78b73a56f64d9678a7bf684e9.1657549153.git.christophe.leroy@csgroup.eu> User-Agent: Mutt/1.4.2.3i Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! On Mon, Jul 11, 2022 at 04:19:29PM +0200, Christophe Leroy wrote: > Commit 0e00a8c9fd92 ("powerpc: Allow CPU selection also on PPC32") > enlarged the CPU selection logic to PPC32 by removing depend to > PPC64, and failed to restrict that depend to E5500_CPU and E6500_CPU. > Fortunately that got unnoticed because -mcpu=8540 will override the > -mcpu=e500mc64 or -mpcu=e6500 as they are ealier, but that's > fragile and may no be right in the future. A later -mcpu= always overrides an earlier one. This is the same as with all other GCC option flags, and will not change in the future. Segher